Grammar Checking

Automatic grammar and spelling suggestions built into the editor.

Last updated March 2026

Overview

Genesis Writer includes built-in grammar and spelling checking. It detects grammar errors, spelling mistakes, and style issues as you write, highlighting them directly in the editor with suggested fixes.

Grammar checking is free — it doesn't use any Genesis Tokens. It runs automatically in the background, catching errors so you can focus on writing rather than proofreading.

Info
Grammar checking is separate from the AI models used for text generation. It's a rule-based proofreading tool, not an AI rewriter. For AI-powered prose improvement, see Polish.

How It Works

As you write in the Draft Editor, the grammar checker periodically analyzes your text in the background. When it detects an issue, it adds an underline beneath the problematic text — similar to how word processors show spelling errors with a red squiggly line.

The checking happens automatically. You don't need to trigger it or click a button. As you type and pause, the checker reviews your recent text and surfaces any issues it finds.

Types of Issues Detected

The grammar checker catches a wide range of issues:

CategoryExamples
GrammarSubject-verb agreement, incorrect tense, missing articles, wrong prepositions
SpellingMisspelled words, typos, common character-swap errors
PunctuationMissing commas, incorrect semicolon usage, quotation mark issues
StyleRedundant phrases, commonly confused words (affect/effect, their/there), passive voice usage

Not every suggestion is mandatory. Style suggestions in particular are advisory — sometimes breaking a grammar “rule” is the right choice for your prose. Use your judgment.

Tip
Creative writing intentionally breaks grammar rules all the time. Sentence fragments for emphasis. Comma splices for pacing. The grammar checker flags these, but that doesn't mean you need to fix them. Dismiss suggestions that conflict with your intentional style choices.

Reviewing Suggestions

Click on any underlined text to see the grammar checker's suggestion. A small popover appears with:

  • The issue — a description of what was detected.
  • The suggested fix — the proposed replacement text.
  • Accept and Dismiss buttons.

The description helps you understand why the text was flagged, not just what the fix is. This is useful for learning and making informed decisions about whether to accept the suggestion.

Accepting & Dismissing

For each suggestion, you have two options:

  • Accept — applies the suggested fix. The underline disappears and your text is updated with the correction.
  • Dismiss — ignores the suggestion. The underline disappears, and the checker won't flag that specific instance again (though it may flag the same pattern elsewhere in the draft).

Both actions are instant. There's no undo for accepting a grammar fix, but you can always use Ctrl+Z to undo the text change itself.

Performance

Grammar checking is designed to feel near-instant. Results are cached, so the same text isn't re-analyzed unnecessarily. When you edit text, only the affected section is rechecked — the rest of the draft keeps its existing results.

Checks run in the background as you type, waiting until you pause before analyzing. You'll only notice a slight delay if you paste a very large block of text at once, in which case suggestions may appear gradually.

Grammar Checking vs. Polish

Genesis Writer has two tools for improving prose quality: grammar checking (this feature) and Polish. They're complementary but different:

AspectGrammar CheckingPolish
EngineRule-based proofreading engineAI model (generative)
How it worksFlags individual errors with specific fixesRewrites selected text with improvements
When it runsAutomatically as you writeOn demand (select text and click Polish)
Token costFreeUses Genesis Tokens
ScopeGrammar, spelling, punctuationGrammar, style, wordiness, clarity, flow
Best forCatching errors in real timeDeep cleanup of finished sections

Use grammar checking as your always-on safety net while writing, and Polish for deliberate refinement passes when you're ready to tighten a section.

Tip
A good workflow: write freely, let grammar checking catch the obvious errors as you go, then run Polish on completed sections for a deeper cleanup.

Tips

  • Don't interrupt your flow. Grammar underlines appear as you write, but you don't have to address them immediately. Keep writing and come back to fix grammar issues during an editing pass.
  • Trust your instincts with style suggestions. The grammar checker may flag intentional stylistic choices. If you wrote a fragment on purpose, dismiss the suggestion and move on.
  • Check character names. The grammar checker may flag invented character names as spelling errors. Dismiss these — they're expected for fiction writing.
  • Grammar checking is per-draft. Like all editor features, grammar checking runs on the currently open Draft node. Switch between drafts and each one is checked independently.
Grammar Checking | Genesis Writer Docs